20744984

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{1321}}^1$

素因数の和:1491

約数の個数: 32

約数和(自身を含む): 42198240

約数和(自身を除く): 21453256

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 151, 302, 604, 1208, 1321, 1963, 2642, 3926, 5284, 7852, 10568, 15704, 17173, 34346, 68692, 137384, 199471, 398942, 797884, 1595768, 2593123, 5186246, 10372492, 20744984]

約数ペア:

[(1, 20744984), (2, 10372492), (4, 5186246), (8, 2593123), (13, 1595768), (26, 797884), (52, 398942), (104, 199471), (151, 137384), (302, 68692), (604, 34346), (1208, 17173), (1321, 15704), (1963, 10568), (2642, 7852), (3926, 5284)]